cpu

Documentation

Index

• Constants
• Variables
• type CPU
  • func NewCPU(logger logger.Logger, bus bus.Accessor, irq interrupt.Interrupt) *CPU
  • func (cpu *CPU) GetRegisters() Registers
  • func (cpu *CPU) Step() Cycle
• type Cycle
• type Registers

Constants

const (
	// C is carry flag
	C flags = iota + 1
	// H is half carry flag
	H
	// N is negative flag
	N
	// Z is zero flag
	Z
)

Variables

var EMPTY = &inst{0xFF, "EMPTY", 0, 1, func(cpu *CPU, operands []byte) {
}}

EMPTY is empty instruction

Types

type CPU

type CPU struct {
	PC   types.Word
	SP   types.Word
	Regs Registers
	// contains filtered or unexported fields
}

CPU is cpu state struct

func NewCPU

func NewCPU(logger logger.Logger, bus bus.Accessor, irq interrupt.Interrupt) *CPU

NewCPU is CPU constructor

func (*CPU) GetRegisters

func (cpu *CPU) GetRegisters() Registers

For Debugging

func (*CPU) Step

func (cpu *CPU) Step() Cycle

Step execute an instruction

type Cycle

type Cycle = uint

type Registers

type Registers struct {
	A types.Register
	B types.Register
	C types.Register
	D types.Register
	E types.Register
	H types.Register
	L types.Register
	F types.Register
}

Registers is generic cpu registers